Question

first of all i would like to thank u

A train takes 2 hours less for a journey of 300 km if it's speed is increased by 5 km/h from its usual speed. Find the usual speed of the train

SUM of the product means

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Maths

find the coordinates of the foot of perpendicular drawn from the origin to the plane 2x-y+3z-7=0

Maths chapter 13 class 9

1. Integration 3/2sin^2 50x